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package org.glassfish.jersey.internal.inject;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;

/**
 * Utility class which is able to install several binders and register them as a whole.
 * <p>
 * {@code Binder} is able to recursively register all injection binding descriptions in all installed binders.
 *
 * @author Petr Bouda (petr.bouda at oracle.com)
 */
public class CompositeBinder extends AbstractBinder {

    private Collection<Binder> installed = new ArrayList<>();

    /**
     * Creates a new {@code CompositeBinder} and adds the collection of binders as candidates to install.
     *
     * @param installed all binder ready to install.
     */
    private CompositeBinder(Collection<Binder> installed) {
        this.installed = installed;
    }

    /**
     * Creates {@code CompositeBinder} with provided binders.
     *
     * @param binders provided binder to install as a collection.
     * @return composite binder.
     */
    public static AbstractBinder wrap(Collection<Binder> binders) {
        return new CompositeBinder(binders);
    }

    /**
     * Creates {@code CompositeBinder} with provided binders.
     *
     * @param binders provided binder to install as an array.
     * @return composite binder.
     */
    public static AbstractBinder wrap(Binder... binders) {
        return new CompositeBinder(Arrays.asList(binders));
    }

    /**
     * Automatically installed all provided binders.
     */
    @Override
    public void configure() {
        install(installed.toArray(new AbstractBinder[] {}));
    }
}
